22
Jul
(Beyond Pesticides, July 22, 2025) A study published in May by Nature Reviews Endocrinology warns that endocrine-disrupting chemicals (EDCs)âsubstances that lead to disruption of the endocrine system in an organismâare driving a rapid rise in female reproductive disorders. While EDCs encompass many different forms of chemicals, such as plastic additives, cigarette smoke, and paracetamol, pesticides are among the most common EDCs. The review pays special attention to pesticide classes such as per-and polyfluoroalkyl substances (PFAS) and organochlorines to evaluate how they derail ovarian development, puberty timing, and hormonal balance across the entire female lifespan. Many pesticides are fluorinated, and therefore classified as PFAS. Background Pesticides represent one of the largest sources of EDC exposure. Many persistent organic pollutants (POPs) are resistant to degradation and are capable of bioaccumulating in the food chain, which leads to these harmful chemicals being found in human adipose tissue. The study notes that these chemicals have also been detected in human blood, breast milk, follicular fluid, and other biological samples, explaining their prevalent presence in the human body. The review emphasizes that humans are exposed to a mixture of EDCs across their lifespan, yet current U.S. regulatory strategies do not fully account for combined lifetime […]
Posted in Endocrine Disruption, Infertility, PCOS, Reproductive Health, Uncategorized, Women's Health | No Comments »
25
Jun
(Beyond Pesticides, June 25, 2025) A United Kingdom (UK) study, published in May by the Womenâs Environmental Network (Wen) and Pesticide Action Network (PAN) UK, is reporting levels of the herbicide glyphosateâa probable human carcinogen that is also linked to Parkinsonâs diseaseâin tampons at concentrations 40 times higher than the legal drinking water limit. This finding highlights the serious public health threats that result from under-regulated period products, given that 1.8 billion people worldwide menstruate monthly, according to UNICEF.  The report raises fundamental concerns about the harm to womenâs health associated with toxic chemical exposure. For tampon users, the vaginal route of exposure bypasses detoxification with a significantly higher absorption rate than skin. In addition, health concerns extend to ongoing chronic toxic chemical exposures to women worldwide working in cotton production and living in nearby communities. Methodology To investigate whether menstrual products contain harmful pesticide residues and whether current safety standards adequately control the risk of vaginal exposure, study researchers tested 15 boxes of tampons directly bought from UK supermarkets. These boxes were sent to an external laboratory for testing that looks for the presence of glyphosate and its breakdown product amionomethylphosphoric acid (AMPA) in the cotton material used to […]
Posted in aminomethylphosphonic acid (AMPA), endometriosis, Glyphosate, Herbicides, PCOS, Reproductive Health, Uncategorized | 1 Comment »
17
Apr
(Beyond Pesticides, April 17, 2025) A literature review in Reproductive Sciences finds glyphosate (GLY) and glyphosate-based herbicides (GBH) impact womenâs reproductive health, adding to the long list of documented harm from this widely used weed killer. The authors note, âConsidering the widespread use of GLY, the controversy regarding its endocrine-disrupting potential and reproductive toxicity, and the innumerable lawsuits filed against Bayer and Monsanto by consumers for morbidities related to Roundup™ exposure, the purpose of this review is to summarize the current literature on the potential adverse effects of GLY and GBHs on the female reproductive tract and discuss possible clinical implications on reproductive health outcomes, including polycystic ovarian syndrome (PCOS), endometriosis, and female fertility.â Glyphosate and aminomethylphosphonic acid (AMPA), the primary metabolite (breakdown product) of GLY, are found throughout the environment in soil and water, as well as in samples of blood, urine, seminal plasma, and breast milk. Studies have detected residues in farmworkers, as well as “in the urine of 60â80% of the general public in the USA, including pregnant women and children.â (See studies here, here, and here.) The ubiquitous use of GLY and GBH, and subsequent persistence, threatens the health and well-being of all. Previous studies have […]
Posted in Agriculture, aminomethylphosphonic acid (AMPA), Bayer, DNA Damage, Endocrine Disruption, endometriosis, Glyphosate, Herbicides, Infertility, Monsanto, Oxidative Stress, PCOS, Reproductive Health, Women's Health | No Comments »
08
Apr
(Beyond Pesticides, April 8, 2025) A comprehensive literature review in Environment & Health analyzes evidence from human biomonitoring, epidemiological studies, and toxicological studies that link adverse effects on womenâs reproductive health, specifically impacting the ovary, to pesticide exposure. In examining the scientific literature, consisting of over 200 studies performed in the last 25 years, the authors find pesticide exposure threatens womenâs health through ovarian dysfunction. âEpidemiological studies have shown that pesticide exposures are associated with early/delayed menarche [first occurrence of menstruation], menstrual cycle disorders, early menopause, long time to pregnancy, polycystic ovary syndrome, primary ovarian insufficiency, infertility, and implantation failure in women,â the researchers state. They continue, âBoth in vivo [in animals] and in vitro [in cells] studies have shown that exposure to pesticides disrupts the estrous cycle, reduces the follicle pool, alters hormone levels, and impairs oocyte [egg] maturation.â These reproductive implications are noted with many different classes of pesticides, such as insecticides, including organochlorine pesticides (OCPs), organophosphates (OPs), pyrethroids, and neonicotinoids, as well as herbicides and fungicides. The authors, however, comment on present research gaps: âMuch of the available epidemiological evidence focuses on legacy insecticides, such as OCPs, and a subset of insecticides that are still in use […]
Posted in acetamiprid, Atrazine, Bifenthrin, Chlorpyrifos, cypermethrin, DDT, Deltamethrin, Diazinon, fenvalerate, Glyphosate, Imidacloprid, Infertility, lambda-cyhalothrin, Lindane, Malathion, mancozeb, Oxidative Stress, PCOS, Permethrin, Reproductive Health, Thiamethoxam, vinclozolin, Women's Health | No Comments »
02
Apr
(Beyond Pesticides, April 2, 2025) In examining prenatal residential proximity of documented pesticide spraying in California to the menstrual cycle characteristics of 273 Latina adolescents, researchers report in the American Journal of Epidemiology a positive association between exposure to the insecticide methomyl and heavy bleeding. Other pesticides appear to influence menstrual symptoms as well. âAdolescentsâ menstrual cycle characteristics can be âvital signsâ of health and impact quality of life,â the authors share. They continue, âTo our knowledge, this is the first study to examine the association between prenatal pesticide exposure and menstrual outcomes in adolescents of any demographic group.â Menstrual cycle characteristics, such as dysmenorrhea (painful or uncomfortable menstrual cramps), irregularity, and heavy menstrual bleeding, can also be indicators of underlying health conditions, including endometriosis, polycystic ovary syndrome (PCOS), thyroid dysfunction, and bleeding disorders. By associating the pesticide exposure of mothers during pregnancy to impacts on their children, the researchers highlight important health risks for women and young girls that are often disregarded. âThe prenatal period is a critical period of reproductive development that may be particularly sensitive to endocrine disruption,â the researchers share. As previously reported by Beyond Pesticides, endocrine-disrupting chemicals are any synthetic or natural compounds that hinder […]
Posted in Acephate, California, Children, Chlorpyrifos, Diazinon, Dimethoate, Endocrine Disruption, endometriosis, Environmental Protection Agency (EPA), Glyphosate, Imidacloprid, Malathion, mancozeb, Maneb, Methomyl, Oxidative Stress, PCOS, Permethrin, Reproductive Health, Women's Health | No Comments »
